Captures by the network of traps run by the Rothamsted Insect Survey are shown below:

Brevicoryne brassicae	Inverness	Dundee	Edinburgh	Ayr	Newcastle	FERA, York	Preston	Kirton	Broom's Barn	Wellesbourne	Hereford	Rothamsted	Writtle	Ascot	East Malling	Starcross	Total
Week ending
29 October					0	0	0	0	0	0	0	0	0	0	0	0	0
22 October					0	0	0	0	0	0	0	0	0	0	0	0	0
15 October					0	0	0	7	0	1	0	0	0	0	0	0	8
8 October					0	0	0	18	0	0	0	0	1	0	1	2	22
1 October					0	0	0	16	1	0	0	0	1	0	1	0	19
24 September					0	0	0	11	0	0	0	0	0	0	0	0	11
17 September					0	0	0	29	1	2	0	0	0	1	0	1	34
10 September					0	0	0	22	0	3	1	0	0	0	0	0	26
3 September		0	0		0	0	0	8	0	0	0	0	0	0	0	1	9
27-August		0	0		0	0	0	5	0	0	0	0	0	0	0	0	5
20-August		0	0		0	0	0	1	0	0	1	0	0	0	0	0	2
13-August		0	0		0	0	1	0	0	0	0	0	0	0	1	0	2
6-August		0	0		0	1	0	3	0	0	1	0	0	0	0	1	6
30-July		0	0		0	1	0	2	0	0	0	0	1	0	0	1	5
23-July		0	0		0	0	0	2	1	1	0	0	0	0	0	0	4
16-July		0	0		1	1	1	2	0	1	4	0	0	0	2	9	21
9-July		0	0		1	6	0	13	2	10	15	1	9	2	7	18	84
2-July		0	0		2	12	4	6	4	1	62	4	4	6	6	34	145
25-June			2		2	64	32	4	20	20	152	26	8	10	9	47	396
18-June			2		2	6	34	1	1	91	208	13	7	1	2	69	437
11-June		0	0		1	13	2	2	4	35	97	4	6	2	1	10	177
4-June		0	0		0	1	0	0	0	2	22	0	2	0	0	14	41
28-May		0	0		0	0	3	1	0	7	41	0	0	0	0	43	95
21-May		0	0	0	0	0	0	0	1	1	10	1	0	0	0	4	17
14-May		0	0	0	0	0	0	0	2	0	0	0	0	0	0	1	3
7-May		0	0		0	0	0	0	0	0	0	0	0	0	0	0	0
30-Apr					0	0	0	0	0	0	0	0	0	0	0	0	0
23-Apr		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
16-Apr		0	0		0	0	0	0	0	0	0	0	0	0	0	0	0
09-Apr					0	0	0	0	0	0	0	0	0	0	0	0	0